<script setup lang="ts">
import { getGoodsByIdAPI } from '@/services/goods'
import type { GoodsResult } from '@/types/goods'
import { onLoad } from '@dcloudio/uni-app'
import { computed, ref } from 'vue'
import AddressPanel from './components/AddressPanel.vue'
import ServicePanel from './components/ServicePanel.vue'
import type {
  SkuPopupEvent,
  SkuPopupInstance,
  SkuPopupLocaldata,
} from '@/components/vk-data-goods-sku-popup/vk-data-goods-sku-popup'
import { postMemberCartAPI } from '@/services/cart'

// 获取屏幕边界到安全区域距离
const { safeAreaInsets } = uni.getWindowInfo()

// 接收页面参数
const query = defineProps<{
  id: string
}>()

// 获取商品详情信息 //知识点：如果是对象类型数据，默认值可以不用设置为空对象，避免TS报错
const goodsData = ref<GoodsResult>()
const getGoodsById = async () => {
  const res = await getGoodsByIdAPI(query.id)
  goodsData.value = res.result

  // 初始化sku组件数据 //知识点：给一个对象赋值，可以使用大对象的方式，而不是一个属性一个属性的赋值，记住用法
  goodsSkuInfo.value = {
    _id: res.result.id,
    name: res.result.name,
    goods_thumb: res.result.mainPictures[0],
    spec_list: res.result.specs.map((item) => ({
      name: item.name,
      list: item.values,
    })),
    sku_list: res.result.skus.map((item) => ({
      _id: item.id,
      goods_id: res.result.id,
      goods_name: res.result.name,
      image: item.picture,
      price: item.price * 100, // 知识点：sku插件价格单位是分，需要手动转换
      sku_name_arr: item.specs.map((item) => item.valueName),
      stock: item.inventory,
    })),
  }
}

// 轮播图切换事件
const currentIndex = ref<number>(0)
const onSwiperChange: UniHelper.SwiperOnChange = (e) => {
  currentIndex.value = e.detail.current
}

// 展示商品大图
const onTapSwiperImg = (item: string) => {
  uni.previewImage({
    urls: goodsData.value!.mainPictures,
    current: item,
  })
}

// 弹出层(送至与服务) 这里使用自定义的类型是因为unihelper提供的类型可能是undefined，使用不方便
const goodsPopup = ref<{
  open: (type?: UniHelper.UniPopupType) => void
  close: () => void
}>()
const popupType = ref<'address' | 'service'>('address')
const openPopup = (type: typeof popupType.value) => {
  popupType.value = type
  goodsPopup.value?.open()
}

// 弹出层(商品规格)
const showSpecPopup = ref<boolean>(false)
// 弹出层组件对象
const skuPopupRef = ref<SkuPopupInstance>()
// 商品sku信息
const goodsSkuInfo = ref({} as SkuPopupLocaldata)
// 收集选中规格信息
const selectSpecText = computed(() => {
  return skuPopupRef.value?.selectArr.join(' ').trim() || '请选择商品规格'
})

// sku组件按钮模式
enum modeType {
  /*1:都显示 2:只显示购物车 3:只显示立即购买*/
  Both = 1,
  cart = 2,
  buy = 3,
}
const mode = ref<modeType>(modeType.Both)
// 显示商品规格弹出层
const onShowSpec = (modeType: modeType) => {
  showSpecPopup.value = true
  mode.value = modeType
}

// 加入购物车事件
const onAddCart = async (e: SkuPopupEvent) => {
  await postMemberCartAPI({ skuId: e._id, count: e.buy_num })
  uni.showToast({
    title: '已加入购物车',
    icon: 'success',
  })
  showSpecPopup.value = false
}
// 立即购买事件
const onBuyNow = (e: SkuPopupEvent) => {
  uni.navigateTo({
    url: `/pagesOrder/create/create?skuId=${e._id}&count=${e.buy_num}`,
  })
}

//配送地址
const addressPanelRef = ref<InstanceType<typeof AddressPanel>>()
const selectedAddress = computed(() => addressPanelRef.value?.selectedAddress)

onLoad(() => {
  getGoodsById()
})
</script>

<template>
  <scroll-view scroll-y class="viewport">
    <!-- 基本信息 -->
    <view class="goods">
      <!-- 商品主图 -->
      <view class="preview">
        <swiper circular @change="onSwiperChange">
          <swiper-item v-for="item in goodsData?.mainPictures" :key="item">
            <image @tap="onTapSwiperImg(item)" mode="aspectFill" :src="item" />
          </swiper-item>
        </swiper>
        <view class="indicator">
          <text class="current">{{ currentIndex + 1 }}</text>
          <text class="split">/</text>
          <text class="total">{{ goodsData?.mainPictures.length }}</text>
        </view>
      </view>

      <!-- 商品简介 -->
      <view class="meta">
        <view class="price">
          <text class="symbol">¥</text>
          <text class="number">{{ goodsData?.price }}</text>
        </view>
        <view class="name ellipsis">{{ goodsData?.name }} </view>
        <view class="desc"> {{ goodsData?.desc }} </view>
      </view>

      <!-- 操作面板 -->
      <view class="action">
        <view class="item arrow">
          <text class="label">选择</text>
          <text @tap="onShowSpec(modeType.Both)" class="text ellipsis"> {{ selectSpecText }} </text>
        </view>
        <view class="item arrow">
          <text class="label">送至</text>
          <text @tap="openPopup('address')" class="text ellipsis"
            >{{ selectedAddress ? selectedAddress.fullLocation + ' ' + selectedAddress.address : '请选择收货地址' }}
          </text>
        </view>
        <view class="item arrow">
          <text class="label">服务</text>
          <text @tap="openPopup('service')" class="text ellipsis"> 无忧退 快速退款 免费包邮 </text>
        </view>
      </view>
    </view>

    <!-- 商品详情 -->
    <view class="detail panel">
      <view class="title">
        <text>详情</text>
      </view>
      <view class="content">
        <view class="properties">
          <!-- 属性详情 -->
          <view class="item" v-for="item in goodsData?.details.properties" :key="item.name">
            <text class="label">{{ item.name }}</text>
            <text class="value">{{ item.value }}</text>
          </view>
        </view>
        <!-- 图片详情 -->
        <image v-for="item in goodsData?.details.pictures" :key="item" mode="widthFix" :src="item"></image>
      </view>
    </view>

    <!-- 同类推荐 -->
    <view class="similar panel">
      <view class="title">
        <text>同类推荐</text>
      </view>
      <view class="content">
        <navigator
          v-for="item in goodsData?.similarProducts"
          :key="item.id"
          class="goods"
          hover-class="none"
          :url="`/pages/goods/goods?id=${item.id}`"
        >
          <image class="image" mode="aspectFill" :src="item.picture"></image>
          <view class="name ellipsis">{{ item.name }}</view>
          <view class="price">
            <text class="symbol">¥</text>
            <text class="number">{{ item.price }}</text>
          </view>
        </navigator>
      </view>
    </view>
  </scroll-view>

  <!-- 用户操作 -->
  <view class="toolbar" :style="{ paddingBottom: safeAreaInsets?.bottom + 'px' }">
    <view class="icons">
      <button class="icons-button"><text class="icon-heart"></text>收藏</button>
      <button class="icons-button" open-type="contact"><text class="icon-handset"></text>客服</button>
      <navigator class="icons-button" url="/pages/cart/cartPage"> <text class="icon-cart"></text>购物车 </navigator>
    </view>
    <view class="buttons">
      <view class="addcart" @tap="onShowSpec(modeType.cart)"> 加入购物车 </view>
      <view class="buynow" @tap="onShowSpec(modeType.buy)"> 立即购买 </view>
    </view>
  </view>
  <!-- uni 弹出层(包含:送至与服务) -->
  <uni-popup ref="goodsPopup" background-color="#fff" type="bottom">
    <AddressPanel ref="addressPanelRef" v-if="popupType === 'address'" @close="goodsPopup?.close()" />
    <ServicePanel v-if="popupType === 'service'" @close="goodsPopup?.close()" />
  </uni-popup>
  <!-- 商品规格弹出层 sku组件 -->
  <vk-data-goods-sku-popup
    @buy="onBuyNow"
    @cart="onAddCart"
    :actived-style="{
      Color: '#27ba9b',
      borderColor: '#27ba9b',
      backgroundColor: '#ecf7f7',
    }"
    ref="skuPopupRef"
    buyNowBackgroundColor="#27ba9b"
    addCartBackgroundColor="#ffa868"
    :mode="mode"
    v-model="showSpecPopup"
    :localdata="goodsSkuInfo"
  />
</template>

<style lang="scss">
page {
  height: 100%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.viewport {
  background-color: #f4f4f4;
}

.panel {
  margin-top: 20rpx;
  background-color: #fff;

  .title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 90rpx;
    line-height: 1;
    padding: 30rpx 60rpx 30rpx 6rpx;
    position: relative;

    text {
      padding-left: 10rpx;
      font-size: 28rpx;
      color: #333;
      font-weight: 600;
      border-left: 4rpx solid #27ba9b;
    }

    navigator {
      font-size: 24rpx;
      color: #666;
    }
  }
}

.arrow {
  &::after {
    position: absolute;
    top: 50%;
    right: 30rpx;
    content: '\e6c2';
    color: #ccc;
    font-family: 'erabbit' !important;
    font-size: 32rpx;
    transform: translateY(-50%);
  }
}

/* 商品信息 */
.goods {
  background-color: #fff;

  .preview {
    height: 750rpx;
    position: relative;

    .image {
      width: 750rpx;
      height: 750rpx;
    }

    .indicator {
      height: 40rpx;
      padding: 0 24rpx;
      line-height: 40rpx;
      border-radius: 30rpx;
      color: #fff;
      font-family: Arial, Helvetica, sans-serif;
      background-color: rgba(0, 0, 0, 0.3);
      position: absolute;
      bottom: 30rpx;
      right: 30rpx;

      .current {
        font-size: 26rpx;
      }

      .split {
        font-size: 24rpx;
        margin: 0 1rpx 0 2rpx;
      }

      .total {
        font-size: 24rpx;
      }
    }
  }

  .meta {
    position: relative;
    border-bottom: 1rpx solid #eaeaea;

    .price {
      height: 130rpx;
      padding: 25rpx 30rpx 0;
      color: #fff;
      font-size: 34rpx;
      box-sizing: border-box;
      background-color: #35c8a9;
    }

    .number {
      font-size: 56rpx;
    }

    .brand {
      width: 160rpx;
      height: 80rpx;
      overflow: hidden;
      position: absolute;
      top: 26rpx;
      right: 30rpx;
    }

    .name {
      max-height: 88rpx;
      line-height: 1.4;
      margin: 20rpx;
      font-size: 32rpx;
      color: #333;
    }

    .desc {
      line-height: 1;
      padding: 0 20rpx 30rpx;
      font-size: 24rpx;
      color: #cf4444;
    }
  }

  .action {
    padding-left: 20rpx;

    .item {
      height: 90rpx;
      padding-right: 60rpx;
      border-bottom: 1rpx solid #eaeaea;
      font-size: 26rpx;
      color: #333;
      position: relative;
      display: flex;
      align-items: center;

      &:last-child {
        border-bottom: 0 none;
      }
    }

    .label {
      width: 60rpx;
      color: #898b94;
      margin: 0 16rpx 0 10rpx;
    }

    .text {
      flex: 1;
      // -webkit-line-clamp: 1;
    }
  }
}

/* 商品详情 */
.detail {
  padding-left: 20rpx;

  .content {
    margin-left: -20rpx;

    .image {
      width: 100%;
    }
  }

  .properties {
    padding: 0 20rpx;
    margin-bottom: 30rpx;

    .item {
      display: flex;
      line-height: 2;
      padding: 10rpx;
      font-size: 26rpx;
      color: #333;
      border-bottom: 1rpx dashed #ccc;
    }

    .label {
      width: 200rpx;
    }

    .value {
      flex: 1;
    }
  }
}

/* 同类推荐 */
.similar {
  .content {
    padding: 0 20rpx 200rpx;
    background-color: #f4f4f4;
    display: flex;
    flex-wrap: wrap;

    .goods {
      width: 340rpx;
      padding: 24rpx 20rpx 20rpx;
      margin: 20rpx 7rpx;
      border-radius: 10rpx;
      background-color: #fff;
    }

    .image {
      width: 300rpx;
      height: 260rpx;
    }

    .name {
      height: 80rpx;
      margin: 10rpx 0;
      font-size: 26rpx;
      color: #262626;
    }

    .price {
      line-height: 1;
      font-size: 20rpx;
      color: #cf4444;
    }

    .number {
      font-size: 26rpx;
      margin-left: 2rpx;
    }
  }

  navigator {
    &:nth-child(even) {
      margin-right: 0;
    }
  }
}

/* 底部工具栏 */
.toolbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  background-color: #fff;
  height: 100rpx;
  padding: 0 20rpx var(--window-bottom);
  border-top: 1rpx solid #eaeaea;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-sizing: content-box;

  .buttons {
    display: flex;

    & > view {
      width: 220rpx;
      text-align: center;
      line-height: 72rpx;
      font-size: 26rpx;
      color: #fff;
      border-radius: 72rpx;
    }

    .addcart {
      background-color: #ffa868;
    }

    .buynow,
    .payment {
      background-color: #27ba9b;
      margin-left: 20rpx;
    }
  }

  .icons {
    padding-right: 10rpx;
    display: flex;
    align-items: center;
    flex: 1;

    .icons-button {
      flex: 1;
      text-align: center;
      line-height: 1.4;
      padding: 0;
      margin: 0;
      border-radius: 0;
      font-size: 20rpx;
      color: #333;
      background-color: #fff;

      &::after {
        border: none;
      }
    }

    text {
      display: block;
      font-size: 34rpx;
    }
  }
}
</style>
